Variant Lib
A library for data-driven mob variants. Usable by both datapackers and modders!
Screenshots
About this Mod
Variant Lib is a Library/API for developers to assist in systems for data driven mob variants to both vanilla and modded entities.
This library modifies the data driven variants of...
- Cow
- Pig
- Chicken
This library may additionally add data driven variants for...
- Sheep
- Rabbit
- Mooshroom
Credits
Thank you to WorldWidePixel for creating the mod's custom lightning conversion sounds.
A generic conversion sound is available for any entity without a specified sound or as a basis for custom conversion sounds.
License
Variant Lib is licensed under the MPL-2.0 license.
All mob conversion sounds are licensed under the CC0-1.0 license.
For Players
Chances are you won't need to download this mod because any modders will have included it in their JAR file.
If for some reason, the developer doesn't do this, if you wish to use its features using a datapack, or if you wish to play with a Fabric exclusive mod through Sinytra Connector, you may of course download the mod.
For Developers
To start developing with Variant Lib from a data pack or as a developer, you should use the Documentation as a guide.
If you are developing a mod with Variant Lib integration, the mod has javadocs within most house.greenhouse.variantlib.api contained classes.
You may additionally reach out through Discord or for support from either other developers using the mod, or a developer of the mod.
Available Versions
How to Install Variant Lib on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.5).
Install Mod
Open the mod browser in the dashboard and search for "Variant Lib". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.5
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Variant Lib server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.5). You can switch loaders with one click in the panel.
Is Variant Lib compatible with fabric and neoforge?
Variant Lib officially supports fabric, neoforge for Minecraft 1.21.5. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Variant Lib – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Variant Lib consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
Similar Mods
Rent Modded Server
Install Variant Lib with just one click on your server.